Turbine inflight restart system
02-02-2016, 04:21 AM
#1
Turbine inflight restart system
Check this inflight turbine restart system.
http://www.youtube.com/watch?v=yPoRI5S1biY&sns=em
http://www.youtube.com/watch?v=yPoRI5S1biY&sns=em
02-02-2016, 07:52 AM
#3
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I think its safe to say that this is a brilliant innovation in the jet rc world. We can argue that car seatbelts will be of no use if while driving down a highway, a projectile comes crashing through your windshield striking you in your chest, but it still saves lives from crashes, certain crashes that is asuuming one isnt driving reckless... I love this innovation..
02-02-2016, 07:57 AM
#4
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Yes, nice idea.
I saw a similar system developed by anaeronautical school in China a while back. They use that to restart UAV. I think it would be available soon to our jet community. The restart takes about 5-6 seconds, and should give us enough air time if we have enough airspeed and height.
I will look for a video of it later.
Mike
I saw a similar system developed by anaeronautical school in China a while back. They use that to restart UAV. I think it would be available soon to our jet community. The restart takes about 5-6 seconds, and should give us enough air time if we have enough airspeed and height.
I will look for a video of it later.
Mike
02-02-2016, 08:55 AM
#7
I think its safe to say that this is a brilliant innovation in the jet rc world. We can argue that car seatbelts will be of no use if while driving down a highway, a projectile comes crashing through your windshield striking you in your chest, but it still saves lives from crashes, certain crashes that is asuuming one isnt driving reckless... I love this innovation..
Any details on this, is it a software upgrade only??
02-02-2016, 10:48 AM
#11
Long ago I did a bunch of inflight restarts with propane start P-80's. Trick was to have enough altitude to have the time for the engine to cool down and get below the rpm/temperature criteria for a start. In the meantime, you'd want to position for a possible dead stick landing.
Still, most of the time when I've had flameouts, it's been little more than a single 180 deg turn and maybe 30 seconds before the wheels were on the ground.
Still, most of the time when I've had flameouts, it's been little more than a single 180 deg turn and maybe 30 seconds before the wheels were on the ground.
02-02-2016, 11:35 AM
#13
What a brilliant development and one I have long had in mind. The BS Viper in the RAF Jet Provost ( I instructed on it for 3 years, so a bit of experience) had an auto ignition system which was a ceramic glow plug so that in the event of a flameout due fuel starvation the engine immediately relit when fuel was restored. In 3 years on the training unit we never experienced any flameout problems that were not dealt with by this automatic system, simple, worked ! I believe that most flameouts on model jet engines are caused by fuel interruption such as bubbles etc.,
Airliner engine also also have auto ignition when flaps are extended or engine anti- ice is switched on by that requires HE igniters, not practical on model jets.
Great advance by Jets Munt , must add it to my truly delightful Merlin 100, a brilliant engine !
Airliner engine also also have auto ignition when flaps are extended or engine anti- ice is switched on by that requires HE igniters, not practical on model jets.
Great advance by Jets Munt , must add it to my truly delightful Merlin 100, a brilliant engine !
Last edited by David Gladwin; 02-02-2016 at 11:44 AM.
02-02-2016, 11:39 AM
#14
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What a brilliant development and one I have long had in mind. The BS Viper in the RAF Jet Provost ( I instructed on it for 3 years, so a bit of experience) had an auto ignition system which was a ceramic glow plug so that in the event of a flameout due fuel starvation the engine immediately relit when fuel was restored. In 3 years on the training unit we never experienced any flameout problems that were not dealt with by this automatic system, simple, worked !
Airliner engine also also have auto ignition when flaps are extended or engine anti- ice is switched on by that requires HE igniters, not practical on model jets.
Great advance by Jets Munt , must add it to my truly delightful Merlin 100, a brilliant engine !
Airliner engine also also have auto ignition when flaps are extended or engine anti- ice is switched on by that requires HE igniters, not practical on model jets.
Great advance by Jets Munt , must add it to my truly delightful Merlin 100, a brilliant engine !
02-02-2016, 11:42 AM
#15
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02-02-2016, 12:22 PM
#16
I would think that the two issues are, first, getting the kero at the plug to light given that there might be significant airflow through the engine being that its in mid-flight (but maybe that's not a problem - although the test doesn't show that scenario), and second, detecting that the relight at the kero plug was successful in a hot engine - which you need to do before you ramp up the fuel into the main fuel jets...
Being able to ride out, or restart, after a bubble would eliminate a very high percentage of flameouts, I believe.
Bob
02-02-2016, 10:13 PM
#21
If you guys enjoyed part 2 of the latest video... here is part 1... https://youtu.be/LxxFJec1ZWk The air bubble shut down which is most common. Say good bye to UAT's
David..
David..
02-03-2016, 02:07 AM
#23
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Naturally I have some affiliation with UAT's but not sure it would be sensible to remove a UAT based on its relative cost/job just because a turbine will re-start, better to provide 'belt and braces' rather than expect the turbine to re-start and have to deal with the delay before power comes back on (assuming it does that is) - even 5 seconds is a lot of time when you are in a critical flight situation, about to rotate, finals etc.
This technology will just make things even more reliable which is great news.
marcs
This technology will just make things even more reliable which is great news.
marcs
02-03-2016, 05:55 AM
#24
Naturally I have some affiliation with UAT's but not sure it would be sensible to remove a UAT based on its relative cost/job just because a turbine will re-start, better to provide 'belt and braces' rather than expect the turbine to re-start and have to deal with the delay before power comes back on (assuming it does that is) - even 5 seconds is a lot of time when you are in a critical flight situation, about to rotate, finals etc.
This technology will just make things even more reliable which is great news.
marcs
This technology will just make things even more reliable which is great news.
marcs
02-03-2016, 07:20 AM
#25
This is awesome. A lot of turbine powered planes are going to be saved. Hopefully its a software update.
I also hope that if there is a fuel leak, prior to the restart the pump can put out a certain pressure to the turbine and if the turbine does not sense the same pressure that it will not restart. That way, it doesn't restart with fueling leaking everywhere.
But overall, this is great.
I also hope that if there is a fuel leak, prior to the restart the pump can put out a certain pressure to the turbine and if the turbine does not sense the same pressure that it will not restart. That way, it doesn't restart with fueling leaking everywhere.
But overall, this is great.
Last edited by Westwindpilot86; 02-03-2016 at 07:21 AM. Reason: Spelling